Still hung up on your ex? Redfoo pens affectionate birthday message to tennis star ex Victoria Azarenka and posts photo covered in love hearts in wake of their split

He has recently spoken about his heartache over his split from tennis champion Victoria Azarenka.

And Redfoo clearly still has strong feelings for his ex, sending her a very affectionate message in celebration of her 25th birthday on Friday.

The X Factor Australia judge shared a photo of the former couple with their arms around each other to Instagram - and perhaps hinting that he is eager for a reconciliation - photoshopped a series of red love hearts over his head.

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Hinting at something: Redfoo posted a very affectionate photo of himself with his arm around his ex Victoria Azarenka in celebration of her 25th birthday on Friday

'Happy 25th baebee love!!! Have a wonderful day! Oh, and kick some major booty!!!!!!! #letsgotowork @vichka35,' he wrote to the tennis champion.

After two years together and a series of engagement rumours, Redfoo and Victoria called time on their relationship in June.

The fuzzy-haired singer, 38, said it was the pair's busy schedules that drove them apart, telling Who Magazine that he wasn't able to juggle his career and his relationship at the same time.

'I want to cryogenically freeze the love, put it in a lab, and come back to it when everything is organised and I can appoint another captain of the ship,' the quirky singer said.

Heartbroken: The couple split in June with the singer saying it was their busy schedules that led to the breakup

'We both had strong careers and we both want to support each other.

'It was tough. I found myself oftentimes thinking more about their career.'

And Redfoo could be trying to drown his relationship woes with his mother Nancy Leiviska concerned that he may by partying a little too hard in the aftermath of their split.

'He's living a little more party life right now,' Nancy toldNew Idea. 'It's all about go to the studio, do a gig - which is a party - and in between he gets to write some introspective songs about his break-up.'

Rocking it: Redfoo clutches an open bottle of vodka as he performed on stage in California in 2011 - his mother has said she is concerned about partying

The songwriter, whose original name is Stefan Gordy, was seen cuddling up to the former world number one as recently as April when they were in Melbourne for the filming of Channel 7's X Factor.

Earlier in the year they had even publicly discussed an engagement with Azarenka warning that her ring 'better be bigger' than fellow tennis player Caroline Wozniacki's.

The current number eight seed also appeared in Redfoo's music video for his hit single Let's Get Ridiculous after the American went solo following his band LMFAO's hiatus.

She featured as a leopard-print wearing air hostess but confessed she need to be convinced into the role in an interview during the WTA championships last year.

Keeping busy: The big-haired star has resumed his world tour with his band member and nephew Skyler Austen Gordy, better known as Sky Blu, as part of their band LMFAO, recently playing shows in Canada and Los Angeles

'I didn't want to be in the music video, to be honest,' she said.

'I was supposed to be a mermaid, but then I said "I am not swimming in the water, you are out of your mind!" He was just trying to include me in every scene there was.'

Redfoo is now in Australia working on X Factor.

The singer has reprised his role at the judging table for the sixth season of the show, appearing alongside fellow judges Ronan Keating, Dannii Minogue and Natalie Bassingthwaite.

Unexpected: The couple had been dating for two years and even sparked engagement rumours when the former number one player joked she wanted a ring bigger than Caroline Wozniacki's